difference between sfp 10g lr and sfp 10g lr s

The main difference between the sfp-10g-lr optical module and the sfp-10g-lr-s optical module is in temperature and temperature grades.
The industrial-grade temperature for the sfp-10g-lr optical module is -40 to 85℃ (-40 to 185℉).
The commercial temperature for the sfp-10g-lr-s optical module is 0～70°C (32 ～ 158°F) — by Speed Fiber.

What do SFP-10G-SR and SFP-10G-LR represent in terms of types of optical modules?

 In 10GBase-LR, "LR" stands for "Long Range," with a wavelength of 1310nm for Single Mode Fiber (SMF), and a transmission distance of 10km. The SFP-10G-LR optical module meets this specification and features miniaturization, low power consumption, and long transmission distance.
 
SFP-10G-LR transceiver is an LC duplex SFP+ transceiver for optical communications, rated for distances up to 10 km and a maximum bandwidth of 10Gbps. “LR” means long distance. The SFP-10G-LR transceiver operates at 1310nm wavelength. It can also support DOM, which is the same as SFP-10G-LR-S. DOM can provide more convenience for monitoring and operating as mentioned before.
 

What does sfp-10g-lr-s represent in terms of types of optical modules?

The sfp-10g-lr-s optical module has a wavelength of 1310nm, fiber type: SMF, and transmitting optical power: -8.2～0.5dBm.
 
 
SFP-10G-LR-S transceiver provides 10GBase-LR throughput up to 10 km over single mode fiber at a wavelength of 1310 nm using an LC duplex patch cable. SFP-10G-LR-S can be applied in enterprise and data center in which don’t require very long distance, temperature tolerances, or other special conditions. SFP-10G-LR-S can also support DOM which can help the administrator to monitor and make feedback of the operation of transceivers, including the temperature, the bias current of the laser diode and so on.
 

SFP-10G-LR-S vs SFP-10G-LR

From their appearance and definition, SFP-10G-LR-S and SFP-10G-LR may be the same, but actually they have some differences in their protocols, temperatures and price.

Protocol

SFP-10G-LR can support three protocols including Ethernet, OTN(Optical Transport Network) and WAN-PHY(Wide Area Network Physics). However, SFP-10G-LR-S can just support Ethernet protocol. In addition, SFP-10G-LR-S does not have TAA compliance.

Temperature Range

SFP-10G-LR-S and SFP-10G-LR transceivers have different temperature ranges. But the operating temperature range of SFP-10G-LR-S is smaller, so SFP-10G-LR-S is better for shorter transmission distance applications than SFP-10G-LR. If you design a project for an enterprise or data center environment that does not need too long distance, temperature tolerances, or other special request, SFP-10G-LR-S should be just fine for you.

Price

Compared with SFP-10G-LR, SFP-10G-LR-S doesn’t have too many specials. And the performance of SFP-10G-LR-S are no better than that of SFP-10G-LR. But why do so many people insist to select SFP-10G-LR-S? This is because SFP-10G-LR-S has lower prices.
 
SFP-10G-LR-S vs. SFP-10G-LR. What is (are) the difference(s) between the two optics?In particular what are the “unnecessary features” of the SFP-10G-LR-S? Can they be used in UA to Core deployment?
…The table below shows the key feature differences for the 10 Gbps S-class vs. C-class.
For UA to core campus applications, S-class is quite suitable.

	C-Class	S-Class
Multi-rate vs. Single-rate	Multi-rate optics: § Ethernet § OTN § WAN-PHY	Single-rate optics: § Ethernet only
Operating temperature range	§ Commercial (0C to 70C) § Extended (-5C to 85C) § Industrial (-40C to 85C)	§ Commercial (0C to 70C) only

What’s your experience of using this Cisco S-class Optics and Non-S-Class Optics? Any sharing here will be appreciated…
 

Conclusion

From this this article, we know that SFP-10G-LR is different from SFP-10G-LR-S in the sides of protocols, temperature ranges and price. Except the C-class and S-class SFP+ transceivers introduced in this article, there are still SFP-10G-SR and SFP-10G-SR-S transceiver.